Disk wheel



. FQRSYTH DISK WHEEL.

APPLICATION man FEB. 21

H he W GEORGE H. FORSYTH, OF CHICAGO, ILLINOIS.

DISK WHEEL.

Specification of Letters Patent. Pgrtgnted Aug, 29, 1922 Driginalapplication filed November 26, 1918, Serial No. 264,253. Divided andthis application filed February 21, 1921.

To all whom 'it may concern.'

Be it-known that l, GEORGE H. FonsYTH, a citizen of the United States,residing atI Chicago, in the county of C ook and State of Illinois, haveinvented certain new and useful Improvements in Disk llflieels, of whichthe following is a specification.

This application isa division of my copending application Serial No.264,253. The invention of this application relates to metal wheels ofthe disk type adapted for use in connection with pneumatic tires.

The principal object ot the invention is to conform and construct thedisk in its peripheral portion adjacent the felly and rim so as toafford ready access to the valve stem of the pneumatic tirefcarriedthereby.

l have found it advantageous to construct the disk body of awheel ofcurved radial cross-section or atan inclination to the plane of thewheel 4in order to impart" thereto a substantialfdegree of resiliencyunder ioad stresses. As the valve stem` ordinarily lies in the medianplane of a wheel, the crossing of such plane by the disk adjacent theperiphery thereotl involves interference. between the valve stem anddisk and renders the former diflicult of access.

According to the present invention, the aforementioned difficulty issolved by pro riding the disk with an aperture substantially in linewith the valve stem axis, through which the valve stem may project or bereached; or, alternatively, by forming a depression or pocket in thedisk to accommodate the valve stem or to afford roomy for effecting anair pipe coupling therewith. y

ln order that the invention may be readily understood, l have in theaccompanying drawings set forth preferred. and modified embodimentsthereof as an illustrative basis for the description of the invention.`

ln the drawings- 4 Y A Fig.' 1 is a fragmentary side elevation of awheel embodying the invention with a portion thereof broken away to showthe valve stem;

Fig. 2 is a tranverse section through the peripheral portion ofthe wheelshown in Fig. 1;

Figs. 3, ltand 5 are views similar to Fig. 2 but showing modifiedprovision for the valve stem,

vSerial No. 446,862.

Having particular reference to Figs. 11 and 2 of the drawing,corresponding tb Figs.

1 and 2 of the parent application, the single disk 11 of the wheel isshown, throughout the greater portion of its periphery, as extendingradially at 12 to the point 13 and thence horizontally at 121 towardsthe rear and thence radially at 15, and terminating in an inclined lipfor supporting the rear side ofthe demountablerim 16. At'intervals,however, pockets 17 are formed in the rear of the wheel by bending themetal radially at 18 from near the point 13 t0 the point 19 and thencein a general hori- Zontal direction to the rear underneath the rim. Thepurpose of this pocket 17.1 is to bring the wall 18 nearer therim-retaining shim 20 to enable the use of short bolts 21 'as a securingmeans.

TheI crossing of the median plane of the wheel by the disk portion 14intercepts the valve stem 22 and, to accommodate the latter.l the diskis apertured at 234 for the passage therethrough of the valve stem andcap..

In F ig. 3, corresponding to Fig. 8 of the parent application, aperipheral fragment of a wheel is illustrated having two disks 24 and25. line of the disk 25 is substantially radial as indicated by theposition of the reference numeral` but at the point correspondingaxially with the valve stem 22, and permissibly at other pointscorresponding to the shim securing bolts 21, the disk 25 is depressedinwardly to form pockets 26 for the housing of the valve stem which isthereby rendered readily accessible froml that side of the wheel, thebase portion of the valve stem in this case, passing through thehorizontal portion 25 of the disk 25 as well as the portion 24a of thedisk 24.

ln that form of construction shown in Fig. 4, corresponding to Fig. 11of the parent application, the wheel is shown as comprising two disks 27and 28 spaced apart, the disk 28 extending in a sweeping curve asindicated by the reference numeral throughout the greater portion of itsperipheral extent. At a point, however, corresponding to the location ofthe valve stem, the disk 28 is depressed inwardly at 29 to the positionindicated in sec-tion at 22a from which posi `tion the disk is reverselvbent intereentin ln the present case the generalY again horizontally.VHere, as in `the vformer instancesy vthe Wheel disk intercepts lthemedian plane of the Wheel and the airis of the valve stein, an aperturelbeing provided therethrough for the accommodation of the valve stemand, as in Fig. 3, a pocket housing for the valve cap 22 being provided.

' in Fig. 5, corresponding to Fig. le of the parent application, thedisks 30 and 31 embrace the valve stem 22 immediately beneath the rim 16and for a slight distance therebelovv. In order to give access to thevalve stein and cap, the disk 3l is provided With a depression or pocket32 into whiclithe valve stem cap projects through an aperture 33 in theupper Wall 82a of the pocket 32.

lt is obvious`3 the essential object of the invention being to provideaccess to the valve stem, that the particular location of the apertureor of the pocket is not ot' moment, and will he controlled by thecross-sectional contour of the disk employed and by the taste of thedesigner affecting his choice of having a smooth uninterrupted frontface with access to the valve stem from the rear, 'or a broken frontface ivith access to the valve f rom the front; the terms front and rearand their use in connection with the illustration and description of theinvention being relative only and not terms of iimitation. liloreover,it will be understood that the several embodiments of the inventionillustrated and described herein are intended as exemplications only,the invention obviously being susceptible of embodiment in various othermodifications Without departure from the essence thereof or sacrifice ofits material advantages, WhereforeV the illustration and description areto be taken in an illustrative and not in an unnecessarily limitingsense.

l claim:

l. The combination orp a vvheel having a disk body, a telly, atire-carrying rim, and a tire having a valve stem, the disk body havinga portion intercepting the valve stem axis and apertured at the point'of interception for affording access to the valve stem.

2. The combination of a Wheel having a disk body, a vtelly, atire-carrying rim, and `a tire having a valve stein, the disk bodyhaving a portion intercepting the axis of the valve stein and aperturedat said point of interception and the valve stem extending through saidaperture.

3. The combination oi a Wheel having a disk body, a telly, atire-carrying rim, and a tire having a valve stem. the disk body havingformed therein a depression spaced from the telly and extending acrossthe median plane of 'the Wheel and including the valve stem axis, thatpart of the disk body forming the upper Wall ot the depression aperturedand the valve stem extending therethrough into the pocket to render thesame accessible.

ln testimony whereof l have hereunto subscribed in v name in thepresence of tivo siibscrihing Witnesses.

GEORGE ii. FORSYTH.

vWitnesses li'-iRoUEniTn Svi', FRANCES K. GmLesriE.

